Mumbai, Feb. 13 -- Coal India Ltd dropped for a fifth straight session today. The stock is quoting at Rs 409.15, down 2.39% on the day as on 13:19 IST on the NSE. The benchmark NIFTY is down around 0.86% on the day, quoting at 25585.15. The Sensex is at 82937.29, down 0.88%.Coal India Ltd has eased around 5.33% in last one month.Meanwhile, Nifty Energy index of which Coal India Ltd is a constituent, has increased around 3.68% in last one month and is currently quoting at 36452.65, down 1.52% on the day. The volume in the stock stood at 49.09 lakh shares today, compared to the daily average of 89.83 lakh shares in last one month. The benchmark February futures contract for the stock is quoting at Rs 404.85, down 2.08% on the day. Coal Indi...